Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39519500be447b18fe744c22f14a9ad46d022a405370b6a6c6928ec26e916355' 
  AND token = 'eRRZ7oOL9c8Blmv4Qzp67j123k2HOD0p4WBPo/FMVPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}